For the 2011 GMC Acadia, the high-beam listing uses a D1S bulb. Low-beam fitment includes both D1S and H11, so the correct bulb depends on the vehicle’s headlight configuration. Check the existing bulb and headlamp housing before ordering; do not substitute one low-beam option for the other without confirming the application.
- High beam: D1S
- Low beam: D1S or H11, depending on configuration
- Front turn signal: 12272NA
- Daytime running light: 3157
- Front side marker: 194NA
Several exterior rear lamps are listed as integrated LED units, including the brake, center stop, tail, rear turn signal, and rear side marker lights. The license plate and map lights may use 168 or 917 bulbs, while parking, glove-box, and trunk applications may use 194 or 7441. Interior listings also include 2721 for the auto light, 2886X for courtesy lighting, 212-2 for the dome light, and 6612F for the vanity light.